Legal claims defining the scope of protection. Each claim is shown in both the original legal language and a plain English translation.
1. A base station apparatus comprising: a setting section configured to allocate an unconfigured carrier indicator field value (CIF value) to a component carrier identification index of a newly added component carrier, while maintaining a correspondence relationship between CIF values and component carrier identification indexes, when a new component carrier is added to one or more component carriers, each of the CIF values being used to label each of the one or more component carriers; and a transmitting section configured to transmit a notification signal to a terminal apparatus, the notification signal including the CIF value allocated to the newly added component carrier and the component carrier identification index of the newly added component carrier; and when a part of the one or more component carriers is deleted, the setting section deletes a CIF value corresponding to the deleted component carrier; and the transmitting section transmits the notification signal including the component carrier identification index of the deleted component carrier.
A base station manages communication with a terminal using carrier aggregation. When a new carrier is added, the base station assigns it a unique Carrier Indicator Field value (CIF), which acts as a short label, and associates this CIF with a carrier identification index, all while maintaining the existing CIF-to-carrier mapping. The base station then sends a message to the terminal containing the new carrier's CIF and its index. If a carrier is removed, the base station deletes the corresponding CIF and notifies the terminal with the removed carrier's identification index. This allows the base station to dynamically adjust the carriers used for communication.
2. The base station apparatus according to claim 1 , further comprising: a control section configured to generate resource allocation information, which includes the CIF value corresponding to the component carrier allocated to the terminal apparatus.
The base station apparatus from the previous carrier aggregation management description also generates resource allocation information for the terminal. This information specifies which component carrier should be used for data transmission, and it includes the CIF value that corresponds to the allocated component carrier. This lets the base station direct the terminal to use the appropriate carrier by referencing the short CIF label.
3. The base station apparatus according to claim 1 , wherein the CIF values are allocated only to component carriers that are used to transmit data.
In the carrier aggregation management system, the base station only assigns Carrier Indicator Field (CIF) values to component carriers that are actively being used to transmit data. Carriers that are not actively transmitting data do not have associated CIF values. This prevents unnecessary allocation of CIF values and helps optimize the system's efficiency by only labeling active carriers.
4. The base station apparatus according to claim 1 , wherein the correspondence relationship between CIF values and component carrier identification indexes is set for each terminal apparatus.
The base station apparatus's carrier aggregation management scheme creates and maintains separate correspondence relationships between Carrier Indicator Field (CIF) values and component carrier identification indexes for each individual terminal. Each terminal has its own unique mapping. This allows the base station to customize carrier aggregation settings and CIF assignments on a per-terminal basis.
5. A transmission method comprising: allocating an unconfigured carrier indicator field value (CIF value) to a component carrier identification index of a newly added component carrier, while maintaining a correspondence relationship between CIF values and component carrier identification indexes, when a new component carrier is added to one or more component carriers, each of the CIF values being used to label each of the one or more component carriers; and transmitting a notification signal to a terminal apparatus, the notification signal including the CIF value allocated to the newly added component carrier and the component carrier identification index of the newly added component carrier; and when a part of the one or more component carriers is deleted, deleting a CIF value corresponding to the deleted component carrier; and transmitting the notification signal including the component carrier identification index of the deleted component carrier.
A method for managing carrier aggregation includes assigning a unique Carrier Indicator Field value (CIF), which acts as a short label, to the identification index of a newly added carrier, while retaining the existing CIF-to-carrier mapping. This occurs when a new carrier is added. A message containing the new carrier's CIF and its index is then transmitted to the terminal. If a carrier is removed, the corresponding CIF is deleted, and the terminal is notified with the removed carrier's identification index.
6. The transmission method according to claim 5 , further comprising: generating resource allocation information, which includes the CIF value corresponding to the component carrier allocated to the terminal apparatus.
The transmission method from the previous carrier aggregation description also generates resource allocation information. This information tells the terminal which component carrier it should use, and it includes the corresponding CIF value for the allocated component carrier. This helps the base station inform the terminal of the specific carrier by referencing its CIF label.
7. The transmission method according to claim 5 , wherein the CIF values are allocated only to component carriers that are used to transmit data.
In the carrier aggregation method, Carrier Indicator Field (CIF) values are only assigned to component carriers that are actively transmitting data. Carriers not used for data transmission are not assigned a CIF. This ensures only the active carriers have labels.
8. The transmission method according to claim 5 , wherein the correspondence relationship between CIF values and component carrier identification indexes is set for each terminal apparatus.
In the carrier aggregation method, the mapping between Carrier Indicator Field (CIF) values and component carrier identification indexes is unique for each terminal. The correspondence relationship is set individually for each terminal apparatus. This customizes carrier aggregation settings for each terminal.
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October 7, 2014
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